551211233412 has 48 divisors (see below), whose sum is σ = 1547259607040. Its totient is φ = 149200032672.

The previous prime is 551211233407. The next prime is 551211233459. The reversal of 551211233412 is 214332112155.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 551211233412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172683628 + ... + 172686819.

Almost surely, 2^551211233412 is an apocalyptic number.

It is an amenable number.

551211233412 is an abundant number, since it is smaller than the sum of its proper divisors (996048373628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551211233412 is a wasteful number, since it uses less digits than its factorization.

551211233412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345370480 (or 345370478 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

Adding to 551211233412 its reverse (214332112155), we get a palindrome (765543345567).

The spelling of 551211233412 in words is "five hundred fifty-one billion, two hundred eleven million, two hundred thirty-three thousand, four hundred twelve".